Spring-wheel.



infissi.

UNTED STATE@ PATENT fVlllQlii.

@LIVER P. MCKEE, OF WAUKESHA, WISCONSIN.

sPnINGl-WHEEL.

Specification of Letters Patent. Pgitmltgd Feb, 25, i913,

Application led November 7. 1912. Serial No. 730.062.

T 0 all whom it may concern.

-tii-'ely simple and inexpensive in its construction, which` comprises few and durable parts fwliicli can be quickl assembled or replaced, and Which will e ectively absorb all the shocks and jars so as to prevent the saine from being transmitted to the bddy of the vehicle. y

With these and other objects in View, the

Vinvention consists in certain novel combinations `and arrangements of the parts as Wllinore fullyappear as the description proceeds, the novel features thereof being` l pointed out in the appended clain Enr a full understanding of the iiiven tion, reference is to be had to the following desription and accompanying drawing, in

Whichz p Figure4 l 1s a side eleviiti'on of a portion of a spring Wheel constructed in accordferred to in the following description and ancewith the invention. Fig. 2.is a transverse sectional view through a portion of the rim of 'the wheel, vand Fig. 3 is a plan view of a portion of the Wheel, the arrangement and disposition of the compression and stabilizing springs being indicated by .dott-ed lines. Corresponding and like parts are reindicated in all the viewsA of the drawings by the saine reference characters.

Specifically describing the present em bodiment of the invention, the numeral 14 designates the inner rim of the Wheel, the said inner rim being rigidly connected to the spokes 2 'which vradiate from the hub 3. This inner rim l is preferably formed of sheet inet-al and is of a material. Width, the opposite edges of the rim being formed with the annular outwardly projectingflanges 4 which are slightly inclined so as to converge toward each other following is a specifi# Surrounding the inner rim 1 and spaced therefrom is the outer or floating rim 5, the said floating rim being transversely curved iii cross section and being of a considerably greater "width than the inner rim l, so as to proiectilaterally from opposite sides of the' said# iriiier rim.' The opposite' edges of the outer or floating rim 5 are formed with the inwardly extending flanges 6 which are inclinedA toward each other and have a. converging relation. Interposed bei tween the inner riin 1 and the outer rim l5 are the radially disposed helical compression springs 7, the said compression springs having the outer eiids thereof engaged by inwardly projecting ositioning-lugs 8 upon the'outer rim 5, W ile the inner ends thereof are engaged by outwardly projecting positioning-lugs 9 upon the inner rim 1I( Thehelical springs 7 are thus held se;- curely against displacement, and these springs serve as a cushioning means between` the inner fixedrim and the outer floating rini for lthe purpose of absorbing the sudden shocks and jars.

In order to hold the outer or oating rim 5 against lateral displacement, a series of stabilizing springs 10 are provided, the said springs being inclined both laterally and crcuinferentially of the Wheel. At intermediate points between the varioiiscom- 4 pression springs'l', the' flanges l of the inner rini v1 are perforatedfor engagement Wtli the ends of the springs, 10. These springs l 10 extend diagonally across t-lie innervrim 1 in opposite directions and also divere'e from each other radially, the outer end o one of the springs 10 being connected to the flange G of the outer rim 5 adjacent one' of the tension springs 7, While the opposite end of the iother spring 1 0 is connected to the opposite flange 6 of the outer rim 5' adjacent the other compression spring l'Z'. It. will thus be obvious that the stabilizing springs 10 connect the flanges 4 on onepside of the wheel toY the flanges Gon the opposite side of the Wheel and are inclined both laterally and circiiniferentially ot' the wheel in opposite directions soas to hold the outer rim 5 yieldingly los in position and prevent either lateral displacement thereof or rotation thereof relative to the inner rim l.

Having tlius described the invention, what claim as new and desire'to secure by Letters Patent, 'is Y. n

Ai spring wheel including an inner rim provided at the edges thereof with out-- floating rim having a greater width than the inner rim so\\as to project laterally upon opposite sides thereof and being provided at its edges `with the inwardly extending peripheral flanges which are inclined inwardly toward each other, correspondingi pairs 'of radial positioning lugs `projecting from the middle' portions ot' the outer and inner rims, radially disposed helical com- 1'5 ipression 'springs interposed between the two rims and having the ends thereof engaged by the said positioning lugs, and a pairc opposed laterally and circumferentially 1nclined stabilizing springs arranged between each adjacent pan of the compression springs, the inner ends of the stabilizing springs being' connected to the peripheral flanges of the inner rini on opposite sides of the wheel at intermediate points between the compression springs, and the said stabilizing springs being extended laterally across the inner rim in opposite directions and inclined circuniferentially in opposite directions so that the outer end of one of the stabilizing springsli's connected to the periphernl flange of the floating rim adjacent one ot the compression springs, while the outer end of the stabilizing spring is connected to the opposite peripheral flange of the floating riin adjacent the other com ression spring.

In testimony whereof I a X my signature in prcsenceof two Witnesses.

OLIVER P. MCKEE.

Witnesses C. H. JACOB, J. G. GREDL. 

